- Effective
- January 30, 1962
- Models
- UH-12A, UH-12B
- Registered aircraft
- 54 matched by model
- Product
- Aircraft · Rotorcraft
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
|---|---|---|---|
| FAA DRS HTML | 19 KB | f195016a…ea26b74 | FAA DRS (API key needed) |
On this page
The airworthiness directive
62-03-01 HILLER: Amdt. 395 Part 507 Federal Register January 30, 1962. Applies to All UH-12A and UH-12B Helicopters. Compliance required within the next 150 hours' time in service after the effective date of this AD.
To preclude additional failures of the tail rotor drive slip joints which can result in loss of power to the tail rotor, replace CR-10 or CR-10T type rollers of both fore and aft slip joints UH-12A Assembly Nos. 24500-9 and -10 and UH-12B Assembly Nos. 24565 and 24544, with the improved Torrington CR-10U type rollers.
(Hiller Service Bulletin No. 44, Revision A covers this same subject.)
This supersedes AD 55-08-03. This directive effective January 30, 1962.
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 54
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1949 | 2 |
|---|---|
| 1950 | 4 |
| 1951 | 3 |
| 1952 | 8 |
| 1953 | 6 |
| 1954 | 1 |
| 1955 | 3 |
| 1956 | 1 |
| 1960 | 1 |
| 1962 | 1 |
| 1963 | 1 |
23 with no year recorded